Piedmont Weather Forecast

    • 55
    • 78

    Becoming Sunny

    • 56
    • 81

    Increasing Clouds

    • 56
    • 77

    Partly Sunny

    • 53
    • 73

    Mostly Cloudy

    • 53
    • 71

    Mostly Cloudy

    • 53
    • 70

    Mostly Cloudy

    • 51
    • 68

    Partly Sunny

Today 19 Sep Inner Portland Metro

Mostly sunny. Highs in the lower 70s.

Tonight 19 Sep Inner Portland Metro

Mostly clear. Lows in the mid 50s. Winds light.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Piedmont Temperature Statistics

September Temperature

Portland, Portland International Airport (3.1 miles)

  • Lowest 8 September, 2026

    51.7 °F

  • Average September

    64.8 °F

  • Highest 9 September, 2026

    88.6 °F

Climate (2021–2026)

Portland, Portland International Airport (3.1 miles)

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  • Average Low 2021–2026

    48.3 °F

  • Average 2021–2026

    56.3 °F

  • Average High 2021–2026

    65.4 °F
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